I should point out that many pro-audio subs have a cross-over built-in and are readily available on your side of the pond.
The problem is that most of them are designed for SPL and sacrifice F3 to get there. However, if you have a pro audio store that you can call or visit, you might ask about what they sell that would make a good home audio subwoofer.
I have a helpful contact at Sweetwater (a mega pro-audio mail order center in the US). I'll try to remember to call him tomorrow and see what ideas he might have.
What kind of budget in USD do you have? I will shoot for your budget plus one lower (due to VAT) in price if I can.
Very nice of you. If you manage to get some info, please share.
I think it's waiting time again. I have to search and search. I'm sensitive to ugly. Even if I found a sub with high pass and DSP, it still may be something I don't want to bring into my home.
Even when I'm not looking at visual esthetic, I often have problems finding something that suits me. And of course, being human, I blame others and develope conspiracy theories about manufacturers making sure you need one extra DSP even if your sub has one.
They know what you need to make your sub sound good and they are very watchful to not give it to you in one single piece.
All joking aside, Denon you linked (to me) looks awful. Disgusting. So let's put that aside; it has less power than my amp, doesn't have any phono in (let alone MC), no subsonic filter (figures, since it's for phono) and has a bunch (for me) useless stuff.
I know this is tough case to make on AH. You're all for features and AVRs and would, in fact, change your 7ch for a 9ch, or even 7.1 for 7.2, which I find very silly, but I gues as silly as I might seem to you.
My ideal system is amp+front L/R+sub (the turntable is already a huuuuuge compromise I'm making to the memory of my fatehr). But I want to be able to tune everything nicely and avoid all "mini-dongles"
Anyway, I need to filter out all options for subs with DSP and high pass and then see if any of them meets the eye.